isisd: retrofit the 'isis metric' command

Signed-off-by: Emanuele Di Pascale <emanuele@voltanet.io>

1 files changed, 66 insertions, 0 deletions

diff --git a/isisd/isis_vty_fabricd.c b/isisd/isis_vty_fabricd.c
index 0dcf12aa05..63dd646cb4 100644
--- a/isisd/isis_vty_fabricd.c
+++ b/isisd/isis_vty_fabricd.c
@@ -770,6 +770,69 @@ DEFUN (no_isis_passwd,
 	return CMD_SUCCESS;
 }
 
+DEFUN (isis_metric,
+       isis_metric_cmd,
+       PROTO_NAME " metric (0-16777215)",
+       PROTO_HELP
+       "Set default metric for circuit\n"
+       "Default metric value\n")
+{
+	int idx_number = 2;
+	int met;
+	struct isis_circuit *circuit = isis_circuit_lookup(vty);
+	if (!circuit)
+		return CMD_ERR_NO_MATCH;
+
+	met = atoi(argv[idx_number]->arg);
+
+	/* RFC3787 section 5.1 */
+	if (circuit->area && circuit->area->oldmetric == 1
+	    && met > MAX_NARROW_LINK_METRIC) {
+		vty_out(vty,
+			"Invalid metric %d - should be <0-63> "
+			"when narrow metric type enabled\n",
+			met);
+		return CMD_WARNING_CONFIG_FAILED;
+	}
+
+	/* RFC4444 */
+	if (circuit->area && circuit->area->newmetric == 1
+	    && met > MAX_WIDE_LINK_METRIC) {
+		vty_out(vty,
+			"Invalid metric %d - should be <0-16777215> "
+			"when wide metric type enabled\n",
+			met);
+		return CMD_WARNING_CONFIG_FAILED;
+	}
+
+	CMD_FERR_RETURN(isis_circuit_metric_set(circuit, IS_LEVEL_1, met),
+			"Failed to set L1 metric: $ERR");
+	CMD_FERR_RETURN(isis_circuit_metric_set(circuit, IS_LEVEL_2, met),
+			"Failed to set L2 metric: $ERR");
+	return CMD_SUCCESS;
+}
+
+DEFUN (no_isis_metric,
+       no_isis_metric_cmd,
+       "no " PROTO_NAME " metric [(0-16777215)]",
+       NO_STR
+       PROTO_HELP
+       "Set default metric for circuit\n"
+       "Default metric value\n")
+{
+	struct isis_circuit *circuit = isis_circuit_lookup(vty);
+	if (!circuit)
+		return CMD_ERR_NO_MATCH;
+
+	CMD_FERR_RETURN(isis_circuit_metric_set(circuit, IS_LEVEL_1,
+						DEFAULT_CIRCUIT_METRIC),
+			"Failed to set L1 metric: $ERR");
+	CMD_FERR_RETURN(isis_circuit_metric_set(circuit, IS_LEVEL_2,
+						DEFAULT_CIRCUIT_METRIC),
+			"Failed to set L2 metric: $ERR");
+	return CMD_SUCCESS;
+}
+
 void isis_vty_daemon_init(void)
 {
 	install_element(ROUTER_NODE, &fabric_tier_cmd);
@@ -814,4 +877,7 @@ void isis_vty_daemon_init(void)
 
 	install_element(INTERFACE_NODE, &isis_passwd_cmd);
 	install_element(INTERFACE_NODE, &no_isis_passwd_cmd);
+
+	install_element(INTERFACE_NODE, &isis_metric_cmd);
+	install_element(INTERFACE_NODE, &no_isis_metric_cmd);
 }